This is how the secret North Korea talks take place in Oslo Norway

The talks in Oslo are the fifth secret meeting between representatives of the United States and North Korea in the last year – in an effort to create new dialogue between the countries

The secret back channel between the United States and North Korea should have been established in the summer of 2016. This week, the parties met near Oslo.
Spokesman for the Swedish Foreign Ministry Rasmus Eljanskog, confirms to VG that they have information about such a meeting, but state that they can not confirm that the meeting has actually taken place.
Around the table are some former US officials who were central to the nuclear talks with Iran.
The Oslo meeting will be the fifth meeting between the parties, in a so-called Track 2 dialogue, with people who do not directly represent the authorities of the two countries